How to Propagate Ivy Plants

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It's surprisingly simple to propagate ivy plants, especially English ivy (​Hedera helix​), by rooting vines that touch the ground, which is a process called layering. You can also root cuttings or grow ivy from seed. Many plants with vines are commonly called ivies, but they're not true ivies. English ivy grows outdoors in U.S. Department of Agriculture plant hardiness zones 4 through 9 or as a houseplant.

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Because many types of ivy are invasive plants, it's environmentally responsible to propagate only non-invasive types unless you're propagating an ivy to grow in a pot where it cannot escape and take over your landscape or as a houseplant.

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Sowing Ivy Seeds

One way to propagate ivy plants is through the seeds they produce. English ivy produces blue-black berries, each of which contains three to five fleshy seeds about 1/3 inch wide. Remove the pulp from the berries, then store the seeds in the refrigerator for a month to improve their germination rate.

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Sow them about 2/3 inch deep in spring after all danger of frost has passed. Choose a spot where they'll get from six to eight hours of sun a day. Keep the soil moist but not soggy. The seeds should germinate in four to eight weeks.

Layering English Ivy

English ivy spreads on the ground naturally by layering, which partially explains its invasive tendencies. Pale green ivy runners or vines spread along the ground and climb walls and trees. Leaves and roots grow from nodes along the runners. You can propagate ivy plants by taking advantage of this layering habit.

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In summer, pin a runner to the ground with wire landscape staples or pieces of wire formed into U-shapes. Keep the soil moist around the pinned runner and roots will grow from these nodes.

When they do, use a knife to cut 3-inch-long sections from the runner with a rooted node in the middle of each section. Sanitize the knife before and after cutting using isopropyl alcohol. Dig up the rooted sections, plant them out of direct sunlight in a planting mix of 1 part peat moss and 1 part vermiculite and water regularly. Use a pot with drainage holes for the ivy.

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Rooting Ivy Cuttings

When English ivy completes its spring and summer growth, take cuttings to propagate ivy plants. Use a sharp, disinfected knife to cut an ivy runner into 3-inch sections with a node in the center of each section. Remove the leaves from the bottom 1 inch of the cutting, and bury it 1 inch deep in a growing flat or pot with holes in the bottom and filled with a mix of 1 part peat moss and 1 part vermiculite.

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Place the flat or pot in a tray of water until the surface is moist, then allow it to drain. Cover the cuttings with burlap or cheesecloth, put them in indirect light and water regularly to keep them from drying out. The cuttings will begin to harden in about a week and root in one to two months.

Root Ivy in Water

Prepare rooted cuttings the same way you did for rooting them in potting media. The difference is that you root the nodes in water, not potting media. Put the cuttings in 3 inches or less of water and set them in indirect light or in a window that faces north.

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They'll grow roots, but not the smaller root hairs they'll need to absorb water from the soil. To develop root hairs, place the rooted cuttings in a moist soilless mix inside a plastic bag. Don't let the mix dry out. Open the plastic bag after a few days and the cuttings will grow root hairs.

Ivy's Invasive Qualities

English ivy naturally propagates by layering along the forest floor. The vine nodes grow roots and more vines. The vines spread, forming dense mats that smother plants that get in their way. Classified as an invasive weed in many areas, you may not want ivy in your yard and you may choose to reconsider propagating it because it can destroy native habitats.

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You can pull up the plant by its roots to remove ivy from siding and other areas, but if that doesn't work, cut the ivy with a string trimmer then spray it with a 2 percent solution of the herbicide 2-4-D. Follow the dilution rates on the label, but they're generally equal to 1 1/3 ounces of 2-4-D diluted in 1 gallon of water.

Use a backpack sprayer and spray on a clear, windless day. The temperature should be above 65 degrees Fahrenheit. Wear long pants, a long-sleeved shirt, chemical-resistant gloves and goggles when working with weed killers. Follow the safety instructions on the label.

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